ios - EXC_BAD_ACCESS when I'm trying to delete a UITableView sections -

i have code:

    // - update data source     self.order.persons.removeatindex(index)      // - disable user interaction     self.tableview.userinteractionenabled = false      // - delete needed section table view     let sectionindexset = nsindexset(index: self.order.persons.count - 1)     self.tableview.beginupdates()     self.tableview.deletesections(sectionindexset, withrowanimation: .automatic)     self.tableview.endupdates()      // - update table view delay update indexes      nstimer.scheduledtimerwithtimeinterval(0.3, handler: {             self.tableview.userinteractionenabled = true             self.tableview.reloaddata()         }) 

so problem:

• case 1: when on visible zone of table view sections, not 1 want delete, works great.

• case 2: when on visible zone of table view section want delete, debugger stop @ line:

  self.tableview.endupdates()

and gives errors :

thread 1: exc_bad_access (code=1, address=0x0).

i don't understand why case 1 working great, case 2 not. information, use reusable cells.

you removing different data source , in tableview

issue

 // - delete needed section table view     let sectionindexset = nsindexset(index: self.order.persons.count - 1) 

fix should

// - delete needed section table view     let sectionindexset = nsindexset(index: index)